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annotate src/core/ngx_shmtx.h @ 4450:4919fb357a5d stable-1.0

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Merge of r4406, r4413: copyrights updated.
author Maxim Dounin <mdounin@mdounin.ru>
date Sun, 05 Feb 2012 20:02:59 +0000
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 * Copyright (C) Nginx, Inc.
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5 */
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8 #ifndef _NGX_SHMTX_H_INCLUDED_
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9 #define _NGX_SHMTX_H_INCLUDED_
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12 #include <ngx_config.h>
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13 #include <ngx_core.h>
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16 typedef struct {
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17 #if (NGX_HAVE_ATOMIC_OPS)
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18 ngx_atomic_t *lock;
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19 #if (NGX_HAVE_POSIX_SEM)
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20 ngx_uint_t semaphore;
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21 sem_t sem;
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22 #endif
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23 #else
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24 ngx_fd_t fd;
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25 u_char *name;
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26 #endif
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27 ngx_uint_t spin;
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28 } ngx_shmtx_t;
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31 ngx_int_t ngx_shmtx_create(ngx_shmtx_t *mtx, void *addr, u_char *name);
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32 void ngx_shmtx_destory(ngx_shmtx_t *mtx);
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33 ngx_uint_t ngx_shmtx_trylock(ngx_shmtx_t *mtx);
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34 void ngx_shmtx_lock(ngx_shmtx_t *mtx);
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35 void ngx_shmtx_unlock(ngx_shmtx_t *mtx);
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38 #endif /* _NGX_SHMTX_H_INCLUDED_ */